您当前的位置：首页 > 通知公告 > 学术报告

Distinguishing the causes of quantum beats in biological systems with ultrafast pump-probe spectroscopy

来源：
报告题目   Distinguishing the causes of quantum beats in biological systems with ultrafast pump-probe spectroscopy
报告人   Prof. Jacob Krich
报告人单位   University of Ottawa
报告时间   2013-08-30
报告地点   合肥微尺度物质科学国家实验室九楼会议室
主办单位   合肥微尺度物质科学国家实验室
报告介绍
报告摘要：
Recent experiments on photosynthetic systems have indicated that coherent delocalization of exciton states significantly contributes to exciton transport, even up to room temperature, raising the possibility that nature has harnessed quantum effects to aid in photosynthesis. However, experimental signals due to excitonic delocalization can be similar to those from vibronic oscillations, which are generally not important for exciton transport. We describe a straightforward experiment -- broadband pump-probe -- to distinguish between ultrafast oscillations from excitonic or vibronic-only sources. We show that standard femtosecond laser systems should be able to perform the experiments and give detailed instructions, describing the bandwidth requirements for the optical pulses and how to interpret the resulting data.

报告人简介：
　　Jacob Krich is an assistant professor in the Department of Physics at the University of Ottawa. He received his BA in Physics from Swarthmore College in Pennsylvania, followed by an MMath from Oxford University, where he was a Rhodes Scholar. He received his PhD in theoretical condensed-matter physics from Harvard University, working with Bertrand Halperin. After receiving his PhD, Jacob was a Ziff Fellow of the Harvard University Center for the Environment in the group of Alán Aspuru-Guzik in the Department of Chemistry and Chemical Biology at Harvard. His research focuses on novel pathways to high efficiency photovoltaics and understanding quantum effects in photosynthesis.

相关文章